The Buddha Master clearly notes from the first of the ten articles for special attention in the Holiest Utmost Secret Sutra of The Supreme and Unsurpassable Mahamudra of Liberation (SAUMOL), that we can not regard the two dharmas of State Practice and Enlightenment Practice as the yab-yum dharma within the tantric division of supreme yoga. This statement can be found in item # 9 from Public Announcement No. 20 from the Office of H.H. Dorje Chang Buddha III.
The Buddha states that State Practice is clean, pure and free of any dirt, manifesting the reality of the holy state of the utmost high nature of enlightenment while Enlightenment Practice is the perfect and fundamental great enlightenment and is the only holiest great dharma of Buddhism that can, within two hours, forcefully guide and put the disciple into the state of self-attaining perfect accomplishment. This includes the following dharmas: the Xianliang Great Perfection, the Dharma of Resurrecting from an Unnatural Death, the Vajra Body Substitution Meditation, the Corpse-Laying Tummo Concentration, and the Mud-Pill Accomplishment. All these dharmas can let the disciple attain realization from on-the-spot practice and demonstrate concrete abilities publicly. None of the sects of Buddhism can accomplish this realization within two hours. Neither the State nor the Enlightenment Practice have anything to do with the so-called male-female yab-yum tantric dharma practice thought by many mistaken people to be these high dharmas.
The Buddha Master has been most critical of the male-female yab-yum dharma from the Esoteric Sect of Tibetan Buddhism and how it has been propagated in the world. He states that this has almost become an evil fashion that lets many people misinterpret and misguide with such a name to perform evil and lewd acts. As an example, the Buddha Master tells us that of those who practice this dharma, there is not one who engages in such practice who can demonstrate any real ability of realization. All they can do is boast of empty words. They cannot have their crowns opened, raise their body temperatures through tummo practice, and/or demonstrate any skills in the five vidyas. All this sort of practice results in are “…endless and innumerable sins and bad karmas.”
In several discourses, the Buddha Master mentions certain famous and popular rinpoches in Tibet who did teach the yab-yum practice and how they did not meet a good end. The Buddha Master seriously warns against such practice, stating that it violates the law of cause and effect and is not a true dharma, but is nothing more than an expression of dharma. It leads to descent into the hell of uninterrupted suffering.
Did Realization Having Anything To Do With The Crowns Opening ? Are Realization Itself were Accomplishment & Attainment ? Is Realization Equal To Liberation ? What Can One Do With The Realization Within The Phenomena Worlds ?
Good questions. I can only give my humble understanding. I am not qualified to give a definitive answer, but I will share some thoughts for your consideration. Realization can be gradual. Most people attain it in increments. Only a Buddha has complete realization—-the ultimate and complete accomplishment and attainment. One can reach a level whereby one is liberated from Samsara or the cycle of rebirth and is not required to come back, but that does not mean he or she is a Buddha. One chooses to come back as a Bodhisattva to help other living beings and in so doing progresses to even higher levels. One gains wisdom and powers with realization that enables one to help more beings and so on until one does become a Buddha. Now, greater wisdom and powers should help open the crown and enable you to keep the precepts, do good, avoid evil, and so forth including helping other beings on their paths. This may not answer your questions directly, but these are the important points to consider from my perspective.